Solve the problem.One pump can drain a pool in 11 minutes. When a second pump is also used, the pool only takes 7 minutes to drain. How long would it take the second pump working alone to drain the pool? (Round your answer to the nearest tenth, if necessary.)
A. 4.3 min
B. 73 min
C. 20.5 min
D. 19.3 min
Answer: D
Mathematics
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Use the Change-of-Base Formula and a calculator to evaluate the logarithm. Round your answer to two decimal places.log5.8 164
A. 2.21 B. 2.90 C. 28.28 D. 0.34
Mathematics
Simplify.
A. 
B. None of these
C. 
D. -1
Mathematics
Graph the equation by plotting points.y = 3x + 9
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The temperature recorded on a thermometer was 9° C. Evaluate the expression 
C + 32 for C = 9 to find the corresponding temperature in degrees Fahrenheit.
A. 48.2° F B. -27° F C. -15.8° F D. 37° F
Mathematics